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EP0768492A1 - Indirect wide beam luminaire - Google Patents

Indirect wide beam luminaire Download PDF

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Publication number
EP0768492A1
EP0768492A1 EP96114285A EP96114285A EP0768492A1 EP 0768492 A1 EP0768492 A1 EP 0768492A1 EP 96114285 A EP96114285 A EP 96114285A EP 96114285 A EP96114285 A EP 96114285A EP 0768492 A1 EP0768492 A1 EP 0768492A1
Authority
EP
European Patent Office
Prior art keywords
indirect
central plane
luminaire
reflector
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96114285A
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German (de)
French (fr)
Other versions
EP0768492B1 (en
Inventor
Gerhard Waldmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Herbert Waldmann GmbH and Co KG
Original Assignee
Herbert Waldmann GmbH and Co KG
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Filing date
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Publication of EP0768492A1 publication Critical patent/EP0768492A1/en
Application granted granted Critical
Publication of EP0768492B1 publication Critical patent/EP0768492B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/005—Lighting devices intended to be free-standing with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the invention relates to a wide-beam indirect light according to the preamble of claim 1.
  • the invention is therefore intended to improve a luminaire of the type mentioned at the outset in such a way that on the one hand excessive luminance on the ceiling directly above the luminaire is avoided, and on the other hand the greater part of the emitted light is emitted laterally and obliquely upwards in order to achieve a good and to achieve uniform illumination of the room.
  • the greater part of the light radiation is deflected laterally upwards in a large angular range, while only the light component emerging upwards on the inner side of the reflectors towards the central plane of the luminaire housing is directly above the Illuminated ceiling area illuminated in a suitable strength.
  • the relatively flat lamp housing 14 is by means of a short lamp shaft 16 and an approximately conical ceiling rose 18 at a short distance from the Ceiling 10 attached.
  • the lower part 20 of the lamp housing 14 is curved slightly convex downwards and consists of an opaque material, which, however, e.g. in the form of a perforated plate or by means of other breakthroughs can optionally let more or less light down.
  • the lower part 20 ends in sections 22 which are bent upwards.
  • a well translucent upper part 24 of the lamp housing 14 can advantageously be connected to the upper ends of the sections 22 which are inclined upwards and inwards.
  • the luminaire housing 14 is formed symmetrically to a vertical central plane 26 which extends in the direction of the longitudinal extent of the luminaire housing 14.
  • a fluorescent tube 28 running parallel to the central plane 26 is arranged.
  • a substantially strip-shaped reflector 30 with a flat downward concavity is attached above each fluorescent tube, the lower edge of which rests approximately at a point 32 on the upper half of the circumference of the fluorescent tube or to a small extent Distance from the same is arranged. In the embodiment shown, this point 32 is displaced from the apex line 34 of each tube 28 to the central plane 26.
  • each reflector 30 has an angled portion 36 which serves to stiffen it in the longitudinal direction and points obliquely outwards and downwards.
  • the relatively flat reflectors 30 are slightly convex upwards and inwards, ie towards the central plane 26 and slightly concave outwards and downwards.
  • an additional reflector 38 is provided which is arranged symmetrically with respect to the central plane 26 and which forms an obliquely upward and inward inclined plane reflector surface 40 on both sides of the central plane 26, which coincides with the respective opposite reflector 30 includes an upward widening acute angle. This angle is based on the average inclination of the vertical section of the reflector 30 without taking into account its curvature.
  • Each flat reflector surface 40 has at its lower edge an angled portion 42 pointing towards the central plane 26.
  • Each reflector 30 essentially serves to direct the light emanating from the light tube 28 for the most part into an angular region B, indicated by dashed lines and pointing obliquely upwards to the side.
  • the lower limit 44 of the angular range B is determined by the upper edge of the bent section 22, while the upper limit 46 is determined by the outer edge of the bend 36.
  • the outer boundary 48 of the angular range C is determined by the convexly curved inside of the reflector 30, while the outer boundary 50 is determined by the reflective surface 40 of the reflector 38.
  • the rest of the light from the fluorescent tubes 28 goes down onto the inner surface of the lower part 20 of the lamp housing 14. It is also partly reflected upwards from here and on the other hand comes down to a small part, e.g. through holes in a perforated plate or the like.
  • the bends 42 of the central additional reflector 38 serve to illuminate the lower part 20 more uniformly in order to achieve a uniform brightness effect when the lamp is viewed from below.
  • an area 52 of the inner surface of the lamp housing 14 (visible reflection area of the reflector 30 in viewing direction D) can be designed with less reflection.
  • the lamp shown in FIG. 1 is shown in its short suspension on the ceiling 10 in an approximate relationship to the room height, while in FIG is.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Luminescent Compositions (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Colloid Chemistry (AREA)
  • Laser Surgery Devices (AREA)

Abstract

The lamp unit has an elongate lamp housing (14) which is symmetrical to its vertical longitudinal centre plane (26), which screens the greater part of the downwards directed light. A pair of light tubes (28) lie on either side of the vertical longitudinal centre plane, with associated reflectors (30) angled upwards relative to the centre plane from a point (32) in the upper half of the light tube periphery. Pref. each reflector has a convex curvature on the side facing the vertical centre plane and a concave curvature on the side facing the light tube, with a lipped top edge (36) bent in the direction of the light tube.

Description

Die Erfindung betrifft eine breitstrahlende Indirektleuchte nach dem Oberbegriff des Anspruchs 1.The invention relates to a wide-beam indirect light according to the preamble of claim 1.

Bei einer sogenannten kurz abgehängten Leuchte muß der Abstand zwischen Decke und Unterkante der Leuchte möglichst klein sein. Solche Leuchten werden in Räumen mit einer Bauhöhe von weniger als 2,5 m benötigt. Es besteht hierbei das Problem, daß unter der Leuchte eine freie Durchgangshöhe von etwa 2,2 m erforderlich ist. Wenn man nun die Leuchte entsprechend kurz abhängt, ist eine hohe Leuchtdichte an der Decke zu erwarten, was für die Beleuchtung unzweckmäßig ist. Auch bei Ständerleuchten mit sehr hohem Ständer tritt dieses Problem auf, wenn sich die Leuchte selbst nahe der Decke befindet.With a so-called short suspended lamp, the distance between the ceiling and the lower edge of the lamp must be as small as possible. Such luminaires are required in rooms with a height of less than 2.5 m. The problem here is that a free passage height of about 2.2 m is required under the lamp. If you hang the lamp up for a short time, you can expect a high luminance on the ceiling, which is not practical for lighting. This problem also occurs with stand lamps with a very high stand if the lamp itself is close to the ceiling.

Obwohl zahlreiche Leuchten dieser Art, auch mit unterschiedlich geformten Reflektoren, bekannt sind, z.B. aus den DE-GM 74 14 939 und 89 08 742 sowie der CH-PS 193 757, ist das erwähnte Problem noch nicht zufriedenstellend gelöst worden. Dies gilt auch für die aus dem Deutschen Gebrauchsmuster DE-GM 7 414 939 bekannte Leuchte der eingangs genannten Art, bei der unterhalb jeder Leuchtstoffröhre ein das Licht derselben nach oben abstrahlender Reflektor vorgesehen ist.Although numerous lights of this type, also with differently shaped reflectors, are known, for example from DE-GM 74 14 939 and 89 08 742 and CH-PS 193 757, the problem mentioned has not yet been solved satisfactorily. This also applies to the luminaire of the type mentioned at the outset, known from German utility model DE-GM 7 414 939, in which the light of each fluorescent tube is the same upward radiating reflector is provided.

Durch die Erfindung soll daher eine Leuchte der eingangs genannten Art so verbessert werden, daß einerseits eine zu starke Leuchtdichte an der Decke unmittelbar oberhalb der Leuchte vermieden wird, andererseits der größere Teil des abgestrahlten Lichtes seitlich und schräg nach oben abgestrahlt wird, um eine gute und gleichmäßige Ausleuchtung des Raumes zu erzielen.The invention is therefore intended to improve a luminaire of the type mentioned at the outset in such a way that on the one hand excessive luminance on the ceiling directly above the luminaire is avoided, and on the other hand the greater part of the emitted light is emitted laterally and obliquely upwards in order to achieve a good and to achieve uniform illumination of the room.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Durch die schräg nach oben geneigte Anordnung der Reflektoren unmittelbar oberhalb der Leuchtröhren wird der größere Teil der Lichtabstrahlung in einem großen Winkelbereich seitlich nach oben abgelenkt, während nur der auf der inneren Seite der Reflektoren zur Mittelebene des Leuchtengehäuses hin nach oben austretende Lichtanteil den unmittelbar oberhalb des Leuchtengehäuses befindlichen Deckenbereich in geeigneter Stärke ausleuchtet.Due to the inclined upward inclination of the reflectors directly above the fluorescent tubes, the greater part of the light radiation is deflected laterally upwards in a large angular range, while only the light component emerging upwards on the inner side of the reflectors towards the central plane of the luminaire housing is directly above the Illuminated ceiling area illuminated in a suitable strength.

In den Unteransprüchen sind vorteilhafte Ausgestaltungen der Erfindung unter Schutz gestellt.Advantageous refinements of the invention are protected in the subclaims.

Anhand der Figuren werden bevorzugte Ausführungsbeispiele der Erfindung näher erläutert. Es zeigt:

Fig.1
einen schematischen Schnitt senkrecht zur Längserstreckung der an einer Raumdecke kurz abgehängten Indirektleuchte gemäß der Erfindung,
Fig.2
eine verkleinerte Darstellung der Leuchte gemäß Fig.1, und
Fig.3
die auf einem hohen Ständer nahe der Raumdecke angebrachte Leuchte gemäß Fig.1 ohne die der Aufhängung dienenden Teile.
Preferred exemplary embodiments of the invention are explained in more detail with reference to the figures. It shows:
Fig. 1
2 shows a schematic section perpendicular to the longitudinal extension of the indirect light according to the invention, which is suspended from a ceiling for a short time,
Fig. 2
a reduced view of the lamp according to Fig.1, and
Fig. 3
the lamp mounted on a high stand near the ceiling according to Fig.1 without the parts used for the suspension.

Da der Abstand A von der Raumdecke 10 zur Unterkante 12 des Leuchtengehäuses 14 gemäß Fig.1 aus den oben erläuterten Gründen möglichst klein sein soll, ist das verhältnismäßig flache Leuchtengehäuse 14 mittels eines kurzen Leuchtenschaftes 16 und einer etwa kegelförmigen Deckenrosette 18 in kurzem Abstand von der Decke 10 befestigt. Der Unterteil 20 des Leuchtengehäuses 14 ist nach unten leicht konvex gekrümmt und besteht aus lichtundurchlässigem Material, das jedoch z.B. in Form eines Lochbleches oder mittels anderer Durchbrüche wahlweise mehr oder weniger Licht nach unten durchlassen kann. An den Seitenkanten des Leuchtengehäuses 14 endet der Unterteil 20 jeweils in nach oben umgebogenen Abschnitten 22. An die oberen Enden der schräg nach oben und innen stehenden Abschnitte 22 kann sich ein gut lichtdurchlässiger Oberteil 24 des Leuchtengehäuses 14 in vorteilhafter Weise anschliessen.Since the distance A from the ceiling 10 to the lower edge 12 of the lamp housing 14 according to FIG. 1 should be as small as possible for the reasons explained above, the relatively flat lamp housing 14 is by means of a short lamp shaft 16 and an approximately conical ceiling rose 18 at a short distance from the Ceiling 10 attached. The lower part 20 of the lamp housing 14 is curved slightly convex downwards and consists of an opaque material, which, however, e.g. in the form of a perforated plate or by means of other breakthroughs can optionally let more or less light down. At the side edges of the lamp housing 14, the lower part 20 ends in sections 22 which are bent upwards. A well translucent upper part 24 of the lamp housing 14 can advantageously be connected to the upper ends of the sections 22 which are inclined upwards and inwards.

Das Leuchtengehäuse 14 ist symmetrisch zu einer in Richtung der Längserstreckung des Leuchtengehäuses 14 verlaufenden vertikalen Mittelebene 26 ausgebildet. In gleichen Abständen von der Mittelebene 26 sowie in gleicher Höhe oberhalb des Unterteils 20, d.h. etwa in der Höhe der umgebogenen Abschnitte 22 des Leuchtengehäuses 14, ist je eine parallel zur Mittelebene 26 verlaufende Leuchtröhre 28 angeordnet. Oberhalb jeder Leuchtröhre ist je ein im wesentlichen leistenförmiger, flach nach unten konkav gekrümmter Reflektor 30 angebracht, dessen Unterkante an einer Stelle 32 an der oberen Hälfte des Leuchtröhrenumfangs etwa anliegt oder in geringem Abstand von demselben angeordnet ist. Bei der dargestellten Ausführungsform ist diese Stelle 32 von der Scheitellinie 34 jeder Leuchtröhre 28 zur Mittelebene 26 hin verschoben. An seinem von der jeweils zugehörigen Leuchtröhre 28 abgelegenen Ende weist jeder Reflektor 30 eine zu seiner Versteifung in Längsrichtung dienende, nach schräg außen und unten weisende Abwinkelung 36 auf. Die verhältnismäßig flachen Reflektoren 30 sind nach oben und innen, d.h. zur Mittelebene 26 hin, leicht konvex und nach außen und unten leicht konkav gekrümmt.The luminaire housing 14 is formed symmetrically to a vertical central plane 26 which extends in the direction of the longitudinal extent of the luminaire housing 14. At the same distance from the central plane 26 and at the same height above the lower part 20, ie approximately at the level of the bent portions 22 of the lamp housing 14, a fluorescent tube 28 running parallel to the central plane 26 is arranged. A substantially strip-shaped reflector 30 with a flat downward concavity is attached above each fluorescent tube, the lower edge of which rests approximately at a point 32 on the upper half of the circumference of the fluorescent tube or to a small extent Distance from the same is arranged. In the embodiment shown, this point 32 is displaced from the apex line 34 of each tube 28 to the central plane 26. At its end remote from the respectively associated fluorescent tube 28, each reflector 30 has an angled portion 36 which serves to stiffen it in the longitudinal direction and points obliquely outwards and downwards. The relatively flat reflectors 30 are slightly convex upwards and inwards, ie towards the central plane 26 and slightly concave outwards and downwards.

Im Bereich zwischen den beiden Reflektoren 30 und den beiden Leuchtröhren 28 ist ein symmetrisch zur Mittelebene 26 angeordneter Zusatzreflektor 38 vorgesehen, der zu beiden Seiten der Mittelebene 26 je eine schräg nach oben und innen geneigte ebene Reflektorfläche 40 bildet, die mit dem jeweils gegenüberliegenden Reflektor 30 einen nach oben sich erweiternden spitzen Winkel einschließt. Dieser Winkel geht dabei von der mittleren Neigung des Vertikalschnitts des Reflektors 30 ohne Berücksichtigung von dessen Krümmung aus. Jede ebene Reflektorfläche 40 weist an ihrem unteren Rand eine zur Mittelebene 26 hin weisende Abwinkelung 42 auf.In the area between the two reflectors 30 and the two fluorescent tubes 28, an additional reflector 38 is provided which is arranged symmetrically with respect to the central plane 26 and which forms an obliquely upward and inward inclined plane reflector surface 40 on both sides of the central plane 26, which coincides with the respective opposite reflector 30 includes an upward widening acute angle. This angle is based on the average inclination of the vertical section of the reflector 30 without taking into account its curvature. Each flat reflector surface 40 has at its lower edge an angled portion 42 pointing towards the central plane 26.

Jeder Reflektor 30 dient im wesentlichen dazu, das von der Leuchtröhre 28 ausgehende Licht zum größten Teil in einen durch gestrichelte Linien angedeuteten, schräg seitlich nach oben weisenden Winkelbereich B zu lenken. Die untere Grenze 44 des Winkelbereiches B wird dabei durch den oberen Rand des abgebogenen Abschnitts 22 bestimmt, während die obere Grenze 46 durch den äußeren Rand der Abwinkelung 36 festgelegt wird. Durch Änderung der Breite des Abschnitts 22 und der Abwinkelung 36 sowie der Krümmung des Reflektors 30 und der Lage der Stelle 32 kann die Öffnung des Winkelbereiches B in gewissen Grenzen verändert werden.Each reflector 30 essentially serves to direct the light emanating from the light tube 28 for the most part into an angular region B, indicated by dashed lines and pointing obliquely upwards to the side. The lower limit 44 of the angular range B is determined by the upper edge of the bent section 22, while the upper limit 46 is determined by the outer edge of the bend 36. By changing the width of the section 22 and the bend 36 as well as the curvature of the reflector 30 and the position of the Point 32, the opening of the angular range B can be changed within certain limits.

Das von der Leuchtröhre 28 nach oben und innen, d.h. in Richtung zur Decke und zur Mittelebene 26 hin abgestrahlte Licht tritt in einen Winkelbereich C aus, der im wesentlichen direkt nach oben zur Decke 10 gerichtet ist. Durch Wahl der Lage der Stelle 32 kann der, Anteil dieses Lichts an der Gesamtabstrahlung der Leuchtröhre 28 eingestellt werden. Die äußere Grenze 48 des Winkelbereichs C wird durch die konvex gekrümmte Innenseite des Reflektors 30 bestimmt, während die äußere Grenze 50 durch die Reflexionsfläche 40 des Reflektors 38 festgelegt wird.That from the tube 28 upwards and inwards, i.e. Light emitted in the direction of the ceiling and the central plane 26 emerges in an angular range C which is directed essentially directly upwards to the ceiling 10. By choosing the position of the point 32, the proportion of this light in the total radiation of the fluorescent tube 28 can be adjusted. The outer boundary 48 of the angular range C is determined by the convexly curved inside of the reflector 30, while the outer boundary 50 is determined by the reflective surface 40 of the reflector 38.

Das restliche Licht der Leuchtröhren 28 geht nach unten auf die Innenfläche des Unterteils 20 des Leuchtengehäuses 14. Es wird von hier ebenfalls teilweise nach oben reflektiert und tritt andererseits zu einem kleinen Teil nach unten, z.B. durch Löcher eines Lochblechs oder dergl., aus. Die Abwinkelungen 42 des mittleren Zusatzreflektors 38 dienen zur gleichmäßigeren Aufhellung des Unterteils 20, um einen gleichmäßigen Helligkeitseffekt zu erreichen, wenn man die Leuchte von unten betrachtet.The rest of the light from the fluorescent tubes 28 goes down onto the inner surface of the lower part 20 of the lamp housing 14. It is also partly reflected upwards from here and on the other hand comes down to a small part, e.g. through holes in a perforated plate or the like. The bends 42 of the central additional reflector 38 serve to illuminate the lower part 20 more uniformly in order to achieve a uniform brightness effect when the lamp is viewed from below.

Um eine zu starke Leuchtdichte im Reflektor 30 (konkave Seite) zu vermeiden, kann ein Bereich 52 der Innenfläche des Leuchtengehäuses 14 (sichtbarer Reflexionsbereich des Reflektors 30 in Betrachtungsrichtung D) reflexionsärmer ausgebildet werden.In order to avoid excessive luminance in the reflector 30 (concave side), an area 52 of the inner surface of the lamp housing 14 (visible reflection area of the reflector 30 in viewing direction D) can be designed with less reflection.

Dies verhindert, daß eine zu starke Blendung bei etwa waagrechter seitlicher Betrachtung der Leuchte in Richtung des Pfeils D eintritt.This prevents excessive glare when the lamp is viewed horizontally in the direction of Arrow D enters.

In Fig.2 ist die in Fig.1 gezeigte Leuchte in ihrer kurzen Abhängung an der Raumdecke 10 im ungefähren Verhältnis zur Raumhöhe dargestellt, während sie in Fig.3 in ihrer Anordnung auf einem auf dem Fußboden 13 stehenden hohen Ständer 17 mit Standfuß 15 dargestellt ist.In FIG. 2, the lamp shown in FIG. 1 is shown in its short suspension on the ceiling 10 in an approximate relationship to the room height, while in FIG is.

Claims (10)

Breitstrahlende Indirektleuchte mit einem langgestrekten symmetrisch zu einer vertikalen Mittelebene (26) verlaufenden, den Lichtaustritt nach unten wenigstens größtenteils abschirmenden Leuchtengehäuse (14) , zwei in demselben in gleichem Abstand zu beiden Seiten der Mittelebene (26) angeordneten Leuchtröhren (28) und mindestens je einem im Leuchtengehäuse nahe jeder Leuchtröhre parallel zu diesen angeordneten Reflektor (30), dadurch gekennzeichnet, daß jeder Reflektor (30) im vertikalen Schnitt von einer Stelle (32) an der oberen Hälfte des Umfangs der zugehörigen Leuchte (28). schräg nach oben von der Mittelebene (26) weg geneigt verläuft.Broad-beam indirect luminaire with an elongated luminaire housing (14) that runs symmetrically to a vertical central plane (26) and at least largely shields the light exit downwards, two light tubes (28) arranged at the same distance from both sides of the central plane (26) and at least one each in the lamp housing near each lamp tube arranged parallel to this reflector (30), characterized in that each reflector (30) in vertical section from a point (32) on the upper half of the circumference of the associated lamp (28). extends obliquely upwards from the central plane (26). Indirektleuchte nach Anspruch 1, dadurch gekennzeichnet, daß die Stelle (32) an der oberen Hälfte des Umfangs der Leuchtröhre (28) von der Scheitellinie (34) desselben zur Mittelebene (26) des Leuchtengehäuses (14) hin verschoben ist.Indirect light according to claim 1, characterized in that the point (32) on the upper half of the circumference of the light tube (28) is displaced from the apex line (34) thereof to the central plane (26) of the light housing (14). Indirektleuchte nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jeder Reflektor (30) zur Mittelebene (26) des Leuchtengehäuses (14) hin leicht konvex und auf der entgegengesetzten Seite entsprechend konkav gekrümmt ist.Indirect luminaire according to claim 1 or 2, characterized in that each reflector (30) is slightly convex towards the central plane (26) of the luminaire housing (14) and correspondingly concave on the opposite side. Indirektleuchte nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß jeder Reflektor (30) an seinem von der zugehörigen Leuchtröhre (28) abgelegenen Ende eine von der Mittelebene (26) des Leuchtengehäuses (14) wegweisende Abwinkelung (36) aufweist.Indirect luminaire according to one of the preceding claims, characterized in that each reflector (30) has at its end remote from the associated fluorescent tube (28) an angled portion (36) pointing away from the central plane (26) of the luminaire housing (14). Indirektleuchte nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß im Bereich zwischen den beiden Reflektoren (30) und den beiden Leuchtröhren (28) ein symmetrisch zur Mittelebene (26) des Leuchtengehäuses (14) angeordneter Zusatzreflektor (38) vorgesehen ist, der wenigstens zwei, jeweils mit einem der Reflektoren (30) einen sich nach oben erweiternden spitzen Winkel (C) einschließende ebene Reflexionsflächen (40) aufweist.Indirect luminaire according to one of the preceding claims, characterized in that in the area between the two reflectors (30) and the two fluorescent tubes (28) there is provided an additional reflector (38) which is arranged symmetrically to the central plane (26) of the luminaire housing (14) and has at least two , each with one of the reflectors (30) has an upwardly widening acute angle (C) including flat reflection surfaces (40). Indirektleuchte nach Anspruch 5, dadurch gekennzeichnet, daß jede Reflexionsfläche (40) an ihrem unteren Ende eine zur Mittelebene (26) des Leuchtengehäuses (14) hinweisende Abwinkelung (42) aufweist.Indirect luminaire according to claim 5, characterized in that each reflection surface (40) has at its lower end an angled portion (42) pointing towards the central plane (26) of the luminaire housing (14). Indirektleuchte nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Innenseite des Leuchtengehäuses (14) im Reflexionsbereich (52) jedes Reflektors (30) reflexionsarm ausgebildet ist.Indirect luminaire according to one of the preceding claims, characterized in that the inside of the luminaire housing (14) is designed with little reflection in the reflection region (52) of each reflector (30). Indirektleuchte nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Leuchtengehäuse (14) einen lichtdurchlässigen Oberteil (24) aufweist.Indirect luminaire according to one of the preceding claims, characterized in that the luminaire housing (14) has a translucent upper part (24). Indirektleuchte nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sie an einer Raumdecke (10) in kurzem Abstand (A) abgehängt ist.Indirect luminaire according to one of the preceding claims, characterized in that it is on a ceiling (10) is suspended at a short distance (A). Indirektleuchte nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß sie auf einem hohen Ständer (17) nahe einer Raumdecke (10) angebracht ist.Indirect luminaire according to one of claims 1 to 8, characterized in that it is mounted on a high stand (17) near a ceiling (10).
EP96114285A 1995-10-10 1996-09-06 Indirect wide beam luminaire Expired - Lifetime EP0768492B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537685A DE19537685C1 (en) 1995-10-10 1995-10-10 Wide beam indirect light
DE19537685 1995-10-10

Publications (2)

Publication Number Publication Date
EP0768492A1 true EP0768492A1 (en) 1997-04-16
EP0768492B1 EP0768492B1 (en) 2003-01-08

Family

ID=7774474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114285A Expired - Lifetime EP0768492B1 (en) 1995-10-10 1996-09-06 Indirect wide beam luminaire

Country Status (10)

Country Link
US (1) US5823656A (en)
EP (1) EP0768492B1 (en)
JP (1) JPH09115319A (en)
AT (1) ATE230839T1 (en)
CZ (1) CZ289619B6 (en)
DE (2) DE19537685C1 (en)
DK (1) DK0768492T3 (en)
NO (1) NO317321B1 (en)
PL (1) PL180394B1 (en)
ZA (1) ZA968394B (en)

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US6186642B1 (en) * 1999-03-12 2001-02-13 Steelcase Inc. On-site fabricated linear ambient lighting system
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EP1208329A4 (en) * 1999-05-13 2008-04-16 Energy Man Ltd Improvements in light fittings
US6505953B1 (en) 2000-04-06 2003-01-14 Genlyte Thomas Group Llc Luminaire optical system
US6837592B1 (en) 2000-04-06 2005-01-04 Genlyte Thomas Group, Llc Indirect luminaire optical system
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US6644830B2 (en) 2001-12-03 2003-11-11 Cooper Technologies Company High output lamp softener
DE10335748B4 (en) * 2003-08-05 2011-07-21 Grimm, Manfred, 59759 pendant light
US8002446B1 (en) 2008-06-09 2011-08-23 Koninklijke Philips Electronics N.V. Virtual direct and indirect suspended lighting fixture
CN101994933B (en) * 2009-08-14 2013-01-09 鸿富锦精密工业（深圳）有限公司 Illuminating device

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Also Published As

Publication number Publication date
CZ289619B6 (en) 2002-03-13
CZ289496A3 (en) 1997-09-17
NO317321B1 (en) 2004-10-11
NO964270L (en) 1997-04-11
EP0768492B1 (en) 2003-01-08
PL180394B1 (en) 2001-01-31
US5823656A (en) 1998-10-20
PL316474A1 (en) 1997-04-14
ZA968394B (en) 1997-05-13
DE19537685C1 (en) 1997-03-13
JPH09115319A (en) 1997-05-02
ATE230839T1 (en) 2003-01-15
DK0768492T3 (en) 2003-04-22
DE59610039D1 (en) 2003-02-13
NO964270D0 (en) 1996-10-08

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